Lincoln Electric 9SS31648-3 S31648-3 HEX SOCKET PLUG - 3/8 NPT Sale Price: $1.97 Original Price: $2.26 HEX SOCKET PLUG - 3/8 NPT PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1 Quantity: Add To Cart Added! HEX SOCKET PLUG - 3/8 NPT PURCHASE PRICE SHOWN IS FOR A QUANTITY OF 1